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Natural rubber–styrene butadiene rubber latex blends: Time-dependent rheological behavior and film formation by Jyothi T. Varkey; Prabha R. Chatterji; S. Someswara Rao; Sabu Thomas is a Materials Science article available to read on EtoBox.

What is Natural rubber–styrene butadiene rubber latex blends: Time-dependent rheological behavior and film formation about?

This article focuses mainly on the effect of maturation time on the rheological behavior of unvulcanized natural rubber (NR) -styrene butadiene rubber (SBR) latex blends. Viscosity shows a composition-dependent behavior with maturation time. It was found that there is a marginal decrease in viscosity for all the systems with maturation time except for the 70/30 NR-SBR blend. In this blend, there is a sharp decrease in viscosity with maturation time. This is associated with the exchange of stabilizers with one another until an equilibrium is reached; that is, all the particles of the blend are stabilized with random mixture of stabilizers. The structural build up observed in 70/30 NR-SBR blend was found to be diminished as the maturation time increases. At equilibrium, there is no further exchange of stabilizers. The behavior of this blend has been explained with the help of a schematic model. The effects of blend ratio and surface active agents on the viscosity were also studied. In addition, the time-dependent flow behavior of prevulcanized latex blends was evaluated as a function of vulcanizing systems and prevulcanization time. There is a regular increase in viscosity with prevu

Who reads Natural rubber–styrene butadiene rubber latex blends: Time-dependent rheological behavior and film formation?

Author

Jyothi T. Varkey; Prabha R. Chatterji; S. Someswara Rao; Sabu Thomas

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0021-8995)

Published

1998

Language

EN

Field

Materials Science (Physical Sciences)